#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula = P2^6;
sbit wela = P2^7;
sbit led1 = P1^0;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
                    0x66,0x6d,0x7d,0x07,
					          0x7f,0x6f,0x77,0x7c,
					          0x39,0x5e,0x79,0x71};
void delayms(uint i);
void display(uchar,uchar);
uchar num,num1,num2,shi,ge;
void main()
{
  TMOD=0x11;
  TH0=(65536-45872)/256;
  TL0=(65536-45872)%256;
  TH1=(65536-45872)/256;
  TL1=(65536-45872)%256;
  EA=1;
  ET0=1;
	ET1=1;
	TR0=1;
	TR1=1;
	while(1)
	{
	  display(shi,ge);
		
	}
}
void display(uchar shi,uchar ge)
{
  dula=1;
	P0=table[shi];
	dula=0;
	P0=0xff;
	wela=1;
	P0=0xfe;
	wela=0;
	delayms(5);
	dula=1;
	P0=table[ge];
	dula=0;
	P0=0xff;
	wela=1;
	P0=0xfd;
	wela=0;
	delayms(5);
}
void delayms(uint xms)
{
  uint i,j;
	for(i=xms;i>0;i--)
	  for(j=110;j>0;j--);
}
void T0_time() interrupt 1
{
  TH0=(65536-45872)/256;
	TL0=(65536-45872)%256;
	num1++;
	if(4==num1)
	{
	  num1=0;
		led1=~led1;
	}
}
void T1_time() interrupt 3
{
  TH1=(65536-45872)/256;
	TL1=(65536-45872)%256;
	num2++;
	if(20==num2)
	{
	  num2=0;
		num++;
		if(num==60)
			num=0;
		shi=num/10;
		ge=num%10;
	}
}
		